Safety guard



W. KUEHNLE.

SAFETY GUARD.

APPLICATION FILED APR. 12, 1919.

Patented Feb. 21, 1922.

W INVENTOR. 7 BY 9 AW ATTORNEY.

SAFETY GUARD.

Specification or Letterslatent. Patented Feb. 2 1, 1922.

Application filed April 12, 1919. -'Seria1'No. 289,631.

7 T0 all'wlwm z't'may concern:

'Be it'known that I, WILLIAM KUEHNLE, a citizen'of the United States, residing in Voodhaven, in the county of Queens and State of New Yorlghave invented certainnew and useful Improvements in Safety Guards, of which the following is a specification. I

This invention relates to printing presses in general and more especially to safety guards for printing presses.

Among the main objects of the present invention, it is aimed to provide a safety guard attachment that can be conveniently secured in place without any reconstruction of the presses, and which can be quickly and readily adjusted to suit any requirements.

These and other features, capabilities and advantages of the invention will appear from the subjoined detail description of certain specific embodiments thereof illustrated in the accompanying drawings in which Figure 1 shows a printing press diagrammatically and equipped with one form of safety guard shown in end elevation.

Fig. 2 is a fragmental side elevation of the embodiment shown in Fig. 1, and in protecting position.

Fig. 3 is an end elevation of the same in retracted position.

Fig. 4 is an end elevation of another form shown in extended or protecting position.

In the embodiment shown in Figs. 1, 2 and 3, there are secured to the sides of the ordinary printing press platen 5, the brackets 6 having portions 7 secured to the edges of the platen so that the sides thereof substantially aline with the face 8 of the platen. Parallel to and spaced from the face 8 of the platen, the portions 9 extend from the portions 7. The portions 9 each have pairs of widely spaced apart guides 10 and 11 extending inwardly from the portions 9 to receive the slidebars 12. To the upper ends of the slidebars 12 is secured the rod 13 to which a curtain 14 is secured, the other end of which curtain is preferably secured to a rod 15 secured to the guides 11 formed on the brackets 6.

The lower ends of the slidebars 12 have projections 16 extending rearwardly of the face 8 of the platen. The projections 16 are connected by the links 17 to any suitable anchoring means, in the present instance,

. the projections 18 formed on the housingin which the shaft of the platen 5 is journaled: The links 17'are provided with a e -TEN. orr's;

plurality of: openings 19 to receive suitable" fastening means such as the. screws 20 whereby, the extent the ourtainfis projected may bendjusted and whereby in addition'the ad justment of the guard to different sizes of presses is facilitated. As shown, the ends of the links 17 are preferably secured to the projections 16 by means of screws, or rivets 21.

From the foregoing it will be seen, as shown in Fig. 2, when the platen iswi thdrawn out of printing position, the links 17 will positively draw the slidebars 12 down so that the curtain is withdrawn out of guarding position. On the other hand, when-the platen is rocked over into printing position as shown in Fig. 1, the links 17 will positively actuate the slidebars 12 so as to project the curtain into guarding position.

In the embodiment illustrated in Fig. 4, brackets 6 and slidebars 12' similar to the brackets 6 and slidebars 12 of the embodiment illustrated in Fig. 1 are provided. Here instead of the rigid links 17, flexible connecting'means such as the chains 22 are provided which connect the projections 16- When the chains 22 are used, it is pref erable to provide the springs 23 which are strained between the abutments 24 formed.

on the upper ends of the slidebars l2 and the abutments 25 formed on the guides 11 on the brackets 6'.

With the modification shown in Fig. 4, when the platen is rocked over into printing position as shown, the chains 22 will positively actuate the slidebars 12 to project the curtain into guardingposition. On the other hand, when the platen is rocked out of printing position, the chains 22 will become slack and'the slidebars 12' will drop down out of guarding position, the springs 23 being provided to insure. this action.

It is obvious that various changes and I modifications ma be made to the details of construction Without departing from the general spirit of the invention.

I claim:

1. The combination with the platen of a printing press, of a pivot housing stationary relative to said platen, a pivot member for said platen journalled in said pivot housing, a safety guard comprising brackets secured to the edges of the platen adjacent to the face thereof, guides formed thereon, slidebars slidably mounted in said guides, a curtain suspended between said slidebars and said brackets, abutment means on said pivot housing above the axis of rotation of the platen, said platen rocking away from said abutment means when swinging into printing position, and links adjustable as to length connecting the lower ends of said slidebars with said abutment means so as to project said safety guard when the platen is rocked into printing position.

2. The combination with a printing press having a platen pivotally mounted relative to a housing, of a safety guard comprising brackets secured to the edges of the platen adjacent to the face thereof, guides formed thereon, slidebars slidably mounted in said guides, a curtain suspended between said slidebars and said brackets, and a pair of links connecting the lower ends of the slidebars to said housing, the links having a plurality of openings with which the fastening means co-operate to facilitate adjustment of the guard.

WILLIAM KUEHNLE. 

